Wow, I have been following the story of the development of this amp on this forum. I casually searched to see what was on eBay today and saw that Bob is selling a pair of hand made mono block tube amps. They were already bid up to about $4k when I last looked. I bet they go for at least twice that. Anyone else want to place a guess as to how much the pair will go for? My guess: $10,668.03 (the .03 is to show the implied rigor in my calculus )